I do think mini-velos can be useful for dense urban environments, so hopefully this will take off.

Aesthetically I don't find it that pleasing, unfortunately. It might look a little neater if the top tube sloped towards the front (like the old-school TT bikes), although I have no idea how well that would work from a functional perspective. Or at least a few different paint options in the near future.

I agree (with your first statement). I live in what must be one of the densest, most bike-unfriendly cities on the planet: Bangkok. I chose a mini velo because of its maneuverability (to dart between cars, motorcycles, vendors, people, dogs, drainage grates, etc.), its small wheels (accelerate very quickly), and size (easier to store or get onto Skytrain) with more simplicity and the ability to use standard parts than most folders (yes, I have them too). The streets are terrible here, and fat tires are a must if you value your life at all; so I am going to convert my 451's to 406's and use Big Apples.

As for forward-sloping top tubes - they really should be rear-sloping to give more clearance (important for climbing onto curbs when there is no room to hop them), to give more height at the head tube, and to create a stiffer frame (the front triangle on many mini velos is not really a triangle). I know many think this isn't as pretty, but I'll go with function first.

Aesthetically I don't find it that pleasing, unfortunately. It might look a little neater if the top tube sloped towards the front (like the old-school TT bikes), although I have no idea how well that would work from a functional perspective. Or at least a few different paint options in the near future.

Kinda like this?
With all the minivelos from big brand manufacturers, mine feel less special...